$285

OHAUS ST300C / Starter 300C Portable PH meter (no probe)

$300

Hach CDW97-KP5 Bull's-Eye General Purpose Conductivity Probe, 5 µS/cm to 1 mS/c

$250

YSI EcoSense EC300 w/probe, case, Conductivity, Salinity, Temp Meter $640 NEW

$142

Optek Danulat C200 Control 200 PH and Conductivity Converter + Mounting Bracket

$33

Oakton Con 450 Rugged Waterproof Conductivity Meter

$124.94

Oakton pH/CON 510 Benchtop Meter pH/mV/Conductivity/TDS/Temp - ph

$289.94

Lab Benchtop pH Meter, 1-3Points Auto Calibration,0.01 pH Accuracy,200 Sets o...

$289

Hanna Instruments HI 991301 pH / EC / TDS Portable Handheld Digital Test Meter

$500

HORIBA ADVANCED TECHNO HE-480C CONDUCTIVITY METER 603014 100-240VAC

$288.59

Apera PH8500-BR Portable pH Meter for Beverage Making with LabSen pH Electrode

$21.42

YSI Model 35 Conductance Meter w/ Probe – Scientific Division – Untested AS-IS

$7.64

HACH 5500sc PO 3/4-LR valve assy for tubes